Heat insulation



1931- E. R. SITTON HEAT INSULATION Filed Oct. 20, 1921 I ATTORNEY Fatentcd Now-17, 1931 rrao STATES PATENT oarea Application filed October 20, 1927- Berial No. 227,389.

My present invention relatesto heat insulating material and more particulary to improved means for reinforcing same and for securing the material ainstthe surface which it is desired to insu ate.

The invention will be best understood by reference to the following detailed description taken with the annexed drawings in which,

Figure 1 is aview in transverse section of an installation including an illustrative embodiment of the invention; Fig. 2 is an elevation as seen from either side of Figure 1 and having parts in section and broken away; Fig. 3 is a view similar to Fig. 2 but showing a modification; Fig. 4 is a v1ew in front ele-' vation showing the invention as applied to an insulating covering for an oil still or like aparatus; Fig. 5 is a View of an individual lock illustrating one form thereof; Fig. 6 is a view in perspective of a reinforcing and securin rod; Fig. 7 shows an alternative form 0 securing means; and Figs. 8 and 9 show forms of. the invention in which dif- 25 ferent means are employed for attaching the rods to the insulation.

Referring now to the drawings by characters of reference, 10 denotes a metalshell which may constitute an oil still, boiler or other heat radiating surface of considerable size to which are secured in amanner to be described blocks 11 of suitable insulating material, the exact nature of which the present invention is not concerned, except that the invention is particularly applicable to insulating material which possesses some degree of rigidity. For the purpose of securing the blocks 11 in place and for affording reinforcement for same I have in the preferred embodi ment, provided rods 12 which have intermediate portions a/see Fig. 6.'of 'a shape or curvature conforming with that of the surface to be insulated and preferably lying next- '5 to such surface, and also radially extending portions 6 to embrace the sides of the block. The latter as shown inrFig. 5 is provided with recesses 13 in the sides thereof to receive the rtions b of the rods. Finally the rods 12 5o ave end portions 0 which preferably extend back alon or parallel to the outer surface of the bloc so as to firmly enclose same.

As shown, rods 12 of circumferentially adjacent blocks 11 are preferably arranged so as to be in substantial register whereby the 5-.) terminal portions 0 of such adjacent rods abut one another and may easily be secured together as, for example, by means of a looped and twisted wire 14 secured beneath the portions 0. Obviously, if desired, the ends 0 may 00 be countersunk in the outer surface of the insulating material so as to enable such surface to be smooth.

By means of the construction thus far described, it will be readily seen that convenient as and simple means have been provided for maintaining the insulation blocks in place and for reinforcing same. In addition, by virtue of the means described of connecting adjacent holding rods, aready means of re- :0 moving a given block is had, it being only necessary to remove the wires 14 along a single line of separation whereupon the block whose removal is desired may be swung backward using the connections on the opposite a line of separation as hinges. This operation is shown in Fig. 4 which illustrates the in- "sulation applied to an oil still 17. In this manner, the plates forming the shell of the boiler as, for example, those shown at 18, so Fig. 4, may be readily made accessible. This is of particular advantagein the case of high pressure oil stills where the rivets and scams have to be caulked frequently because of the intense firing to which they are subjected. 85 Furthermore, on oil-field boilers which are .moved from place to place, the insulation may be wholly or partially removed as may be necessary on account of the exigencies of moving. no The number of sections employed per 360 of circumference will usuall vary in accordance with the diameter oi the apparatus whose surface is to be insulated, the size of larger blocks conveniently being'not larger (95 than three feet square. Thus in the case of .a pipe line, for example, only two sections per 360 of circumference need as a rule be employed. Furthermore other modes of fastening may be used for the rods; thus the ,100

ends of the latter may be flattened and provided with holes to receive a bolt which ma be held in place by the usual nut, all of whic is shown in Fig. 7. With reference to the 5 form of block shown in Figs. 2 and 5 the same is formed with internal grooves 20, Fig. 5, to receive the rods 12, this construction permitting the material to be disposed flush with the surface to be insulated. In

order to facilitate the manufacture of the the heat insulating material, I may pass the middle or intermediate portion of the rods through the body of the blocks; ordinarily, however, this construction is not necessary, it being a feature of the invention that the improved securing and reinforcing means proposed is such as to dispense with the need for internal reinforcement including the usual hardware-cloth, poultry netting, etc. In Figs. 8 and 9 I have shown an alternative method of attaching the rods to the blocks by wiring the same thereto. In Fig. 8, for example, the wire 25- makes loops 26 around rod 12, the upper stretches of the wire preferably being contained within a slight groove 260, at the surface of the insulation. Wire 20 is also conveniently provided with portions 27 by means of which adjacent block sections may be secured together as by the use of attaching wires 28. In Fig. 9 a similar construction is presented except that the rod 12 lies at or near the outer surface of the insulation 11. In this latter construction also I portions binding the sides of said blocks and means securing rods of adjacent blocks constituting hinges therefor.

3. A heat insulating covering comprising blocks of heat insulating material of substantially rigid but friable nature and reinforcing and retainin rods therefor extending beneath said bloc s said rods being individual to said blocks and removable therewith, and means for securing said rods to said blocks comprising a wire having loops extending from the exterior portion of the the rods 12 have portions 30 forming the securing means instead of the wires 25. It will be evident that the forms of the invention just described are of particular value when the insulating material is of such nature that it may be cast around the reinforcing structure, and where the existing shapes of the material do not have to be utilized.

It will be understood that the various embodiments described are illustrative only and that various changes may be made without 50 and reinforcin departing from the spirit of my invention or scope of the appended claims.

I claim:

1. A heat insulating covering comprising a plurality of blocks of insulating material and retaining members therefor consistmg of metal rods extending beneath said blocks and around the sides thereof and means joining the ends of adacent rods serving to secure said blocks in place and insulating cement in the space beblock and engaging said rods.

4. A heat insulating covering comprising removable abutting sections of substantial- 1y rigid but friable heat insulating material, re-inforcing and retaining metal rods individual to said blocks and extending beneath the outer surface thereof and substantially around three dimensions thereof, said rods being removable with the sections around which they extend and serving to protect said sections both in and out of service. 1

5. A heat insulating covering comprising removable abutting sections of substantially rigid but friable heat insulating material, re-inforcing and retaining metal rods individual to said blocks and extending around three dimensions thereof and having their ends engaging a fourth side, said rods being removable with said sections and serving to protect same both in and out of service.

6. A heat insulating covering comprising removable abutting sections of substantially rigid but friable heat insulating material, re-inforcing and retaining metal rods individual to said blocks and extending beneath the outer surface thereof and substantially around three dimensions thereof, saidrods being removable with the sections around which they extend and serving to protect said sections both in and out of service, and tie means engaging said rods for securing adjacent sections together.

In testimon whereof I have aflixed my signature to t is specification.

ELBERT R. SITTON. 

